bin/set_wake_on_lan

#!/bin/sh
#
# Copyright (C) 2014 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# Set the Wake on LAN behavior.

FLAGS_HELP="Usage:
  $(basename $0)
  $(basename $0) [true | false]

Enable or disable Wake on LAN for Ethernet devices.  This command takes
effect after re-connecting to Ethernet and is not persistent across system
restarts."

. /usr/share/misc/shflags

FLIMFLAM=org.chromium.flimflam
IMANAGER="${FLIMFLAM}.Manager"
PROPERTY_NAME=WakeOnLanEnabled
PROPERTY_DESC="Wake on LAN"

usage() {
  echo "Invalid invocation: $*"
  echo
  flags_help
  exit 1
}

dbus () {
  local obj="$1"
  local meth="$2"
  shift 2

  dbus-send --system --print-reply --fixed --dest="${FLIMFLAM}" "${obj}" "${meth}" "$@"
}

get_manager_property () {
  dbus / "${IMANAGER}.GetProperties" | sed -n "/$1/s/.* //p"
}

display_value () {
  local value=$(get_manager_property "${PROPERTY_NAME}")

  if [ -n "${value}" ] ; then
    echo "Current ${PROPERTY_DESC} setting: " $value
    exit 0
  fi

  echo "This connection manager instance does not support ${PROPERTY_DESC}"
  exit 0
}

FLAGS "$@" || exit 1
eval set -- "${FLAGS_ARGV}"

if [ $# -lt 1 ]; then
    display_value
fi

set_value="$1"

if [ "${set_value}" != "false" -a "${set_value}" != "true" ] ; then
    usage "Argument must be 'true' or 'false'"
fi

dbus / "${IMANAGER}.SetProperty" string:"${PROPERTY_NAME}" "variant:boolean:${set_value}"